The application is divisional application, and the application number of original bill is 200980144558.4, and the applying date is on 09 04th, 2009, and denomination of invention is " sprayer ".
Background technology
The present invention relates generally to sprayer unit, and more particularly, relates to the sprayer unit being applicable to multiple container.
The typical lawn and the garden tank type sprayer (tank sprayer) that apply fertilizer, pesticide or other chemicals need fixing dilution ratio, provide fluid spray mixture by adding water to it.There is provided and be enough to atomizing fluid mixture and impel it to become the pressure of spraying, a large amount of energy must be needed.This needs air to be manually extracted in pressure chamber, and by pressure increase to producing the magnitude being enough used for the spray pattern applied, this is too high to the manpower requirements of user.Pressure also periodically will be withdrawn into its operating pressure by user, to re-establish suitable spray pattern, thus interrupt spray process, extend the time required for spraying applying.
Current available garden hoses end (hose-end) sprayer being incorporated to pumping cells (aspirating unit) utilizes a series of mouth to come the concentrate side (concentrate side) of metering system, to reach default mixed proportion.For example, the conventional Dial N Spray that can buy from Si Keci miracle Ge Luo company (Scotts Miracle-Gro Company)tMunit uses the with a scale and various mouths of tape label in the disk rotated, and makes user only need dial to be set to correct arranging and reaches desired mixed proportion.Downstream pressure fluctuation (adjustable nozzle sometimes there will be this fluctuation) may affect the metering accuracy of these pumping cells.In addition, when producing counter-pressure in rose, Venturi tube cannot work lower than during atmospheric pressure, thus causes flow change or in fact stop.Mixed proportion also can be affected.These changes of mixed proportion are again by effect of impact spraying applying.
In addition, the many sprayers on market need premixed chemicals and water, thus make user be exposed to chemicals and during mixing chemicals overflow possibility.The initial opening of concentrate bottle cap and the sealing of typical paper tinsel may be difficult to stave.User uses sharp-pointed instrument to stave sealing usually.Instrument, when puncturing paper tinsel, very likely can be stained with concentrate above.Instrument and the process opening paper tinsel sealing make user be exposed to unexpected concentrate spilling.Sometimes use and transmit the amount that concentrate measured by container, described concentrate is then sent to sprayer.There is the exposure be associated with the cleaning and storage that transmit container in the process.User needs the concentrate manually measuring recommended amount with spoon, lid or other measurement mechanism.Then add concentrate, and in sprayer tank, dilute concentrate for applying with the water of known volume.Premixed and transport process may make concentrate be deposited on the improper surface of sprayer, thus cause being exposed to chemicals to a greater extent.
The main purpose of embodiments of the invention is to provide a kind of energy and eliminates or reduce the nebulizer systems that user is subject to the possibility of the chemicals injury of concentrate and dilution.Another object of embodiments of the invention is to provide a kind of nebulizer systems not needing premixed concentrate and water.Another object of embodiments of the invention is to provide a kind of nebulizer systems, and it reduces or eliminates and sprays chemicals, stores chemicals, correctly throws aside chemicals and remove the environmental problem and other problem that chemicals is associated.The another object of embodiments of the invention is to provide a kind of nebulizer systems being applicable to the container of any type.Another object of embodiments of the invention is to provide a kind of nebulizer systems with accurate and reliable gauge assembly.Another object of embodiments of the invention is to provide a kind of easy cleaned nebulizer systems.Another objects of embodiments of the invention is to provide the transparent and visual instruction of a kind of movement to fluid, mixing and filter process.The another object of embodiments of the invention is to provide a kind of according to ergonomic design and operate not too effort or effortless nebulizer systems.Another object of embodiments of the invention has clean water in the sprayer tank only allowing to pressurize.
Accompanying drawing explanation
By coordinating accompanying drawing to read following " detailed description of the invention ", more fully will understand and understand embodiments of the invention, wherein:
Fig. 1 is the perspective view of the embodiment of nebulizer systems of the present invention;
Fig. 2 is the perspective view of the embodiment of sprayer combination part of the present invention;
Fig. 3 is the partial cross sectional view of the embodiment of sprayer combination part of the present invention;
Fig. 4 is the partial cross sectional view of the embodiment of sprayer combination part of the present invention;
Fig. 5 a is the perspective view of the embodiment of the dip-tube of nebulizer systems of the present invention;
Fig. 5 b is the perspective view of the dip-tube of nebulizer systems of the present invention and the embodiment of container;
Fig. 6 is through the embodiment of the measurement loop figure of the fluid flow style of nebulizer systems of the present invention;
Fig. 7 is the fragment figure of the embodiment of the spraying sub-assembly of the present invention illustrating Venturi tube;
Fig. 8 is the fragment figure of the embodiment of the spraying sub-assembly of the present invention illustrating Venturi tube;
Fig. 9 is the fragmentary perspective view of the embodiment of sprayer combination part of the present invention;
Figure 10 is the fragmentary perspective view of the embodiment of sprayer combination part of the present invention;
Figure 11 is the fragmentary perspective view of the embodiment of sprayer combination part of the present invention; And
Figure 12 is the fragmentary perspective view of the embodiment of sprayer combination part of the present invention.
Detailed description of the invention
As understood, embodiments of the invention will provide the spraying system 10 with spraying sub-assembly 12 as Figure 1 illustrates in, and described spraying sub-assembly 12 is for being easily adapted for use in container 14 for recalling, mixing and distribute the composition from container 14.The additive of such as chemicals or fertilizer component etc. preserved usually by container 14, and it must mix with another fluid (such as water).Spraying sub-assembly 12 comprises the flexible hose 16 for being attached to fluid source (such as water pot 18).Should be appreciated that, fluid source can have the arbitrary structure in various structures (comprising the tank of Backpack type tank, Portable tank and even tractor transport).
Spraying sub-assembly 12 can cooperate (being illustrated in Fig. 5 a and Fig. 5 b) with container 14 via dip-tube 20.Dip-tube 20 is inserted in container 14, by it, composition is drawn into spraying sub-assembly 12.Dip-tube 20 comprises head portion or covers 22 and axle 24.Cover 22 adjustable and can be coupled in the vessel port of multiple size, thus being connected to described vessel port.As plotted as shown in Figure 4, the head portion 22 of dip-tube 20 is coupled to the mouth 26 of container 14.The lid 22 of a large amount of different size can be equipped with dip-tube 20, is attached to the container of spraying sub-assembly 12 for being accurately coupled to container 14 or any needs.Therefore, dip-tube 20 and lid 22 easily from a vessels switchover to another container, thus can use same spraying sub-assembly to use different chemicals for different application.
In another aspect of this invention, spraying sub-assembly 12 comprises metering device 28, changes in order to make the ratio of the component mixed.Metering device 28 is coupled to fluid conduit systems 29 and is positioned on shell 30, and described shell surrounds the assembly of spraying sub-assembly 12 further.During each use, can according to the ratio that should be used for changing the composition in container 14 and the fluid (such as, water) in tank 18.In addition, because therefore system can use, so different compositions may need the different mixing proportion with water from different containers together with different compositions.Metering device 28 solves all these needs by providing to the selection of multiple ratio (comprising chemicals concentrate and the ratio of water in 500:1 to 4:1 scope).The example of the ratio that can be provided by device 28 is including (but not limited to) 0.25 concentrate: 0.75 water, 0.50 concentrate: 0.50 water or 0.75 concentrate: 0.25 water.Rotary dial, makes it mate to be positioned at the preferred proportion at arrow 32 place above device 28, whereby device 28 is set to preferred proportion.
Referring to Fig. 3, Fig. 4 and Figure 12, in these figure, depict the intraware in the shell 30 of sprayer combination part 12.Intraware comprises fluid conduit systems 29, and described conduit 29 comprises all passages for therefrom flowing through for fluid and concentrate in spraying sub-assembly 12.Path 34 extending longitudinally is coupled to the flexible hose 16 (being illustrated in Fig. 1) at inlet side 36 place being arranged in path 34 and proceeds to outlet 38.Shutoff valve 80 is linked to path 34 and flexible hose 16, and is connected to trigger (trigger) 82.When pressing trigger squeeze 82, water just can flow through path 34.Releasing trigger 82, shutoff valve 80 just blocks water does not allow it flow through path 34.Flexible pipe 16 and container 18 can be protected like this.The position of filter 84 can fluid upstream end in shell 30, if need easily to clean.
As Figure 1 illustrates in, outlet 38 can be connected to major axis 40, and major axis 40 is connected to spray nozzle tip 42 further.Path 34 is also connected to path 44, and path 44 is located perpendicular to path 34.Path 44 is connected to path 46 further, and path 46 is perpendicular to path 44 and be parallel to path 34 and extend.Path 46 is connected to path 48, and path 48 is connected to path 34, thus forms ring-type.Path 46 is also connected to path 34 via path 50.Check-valves 35 is positioned at the top of path 50, and protection container 14 is from any backflow of fluid.A Venturi tube 52 is positioned at path 34, and another Venturi tube 54 is positioned at path 46.Double venturi produces venturi-effect, draws concentrate, make it mix with the water in fluid conduit systems 29 from container 14.Double venturi is arranged provides high-pressure fog, thus makes sprayed volume evenly and continuously.
Note that in the following discussion, Fig. 6 to Fig. 8 is the mirror image that Fig. 1 to Fig. 4 flows relative to catheter line and fluid.Fluid flowing in Fig. 1 to Fig. 4 is from right to left, and the fluid flowing in Fig. 6 to Fig. 8 is from left to right.
Referring to Fig. 6, it illustrates double venturi circuit 60 of the present invention, and clearly illustrate that mixture (concentrate and the water) flowing type in spraying system 10.Main Venturi tube 54 is arranged in path 46, and secondary Venturi pipe 52 is arranged in path 34.Concentrate from container 14 is upwards drawn to path 56 by dip-tube 20.Shutoff valve 58 is arranged in path 50.If shutoff valve 58 is opened, concentrate is just by two path flowings.That is, concentrate flow to spray nozzle 42 by path 46, also flow to path 34 by path 50 and arrives spray nozzle 42 again.
Water enters flexible hose 16 at import 36 place, and is directed in two different paths at point 37 place.Water is as shown in arrow 62 to flow downward along path 44.Water to move into and by path 54 and by main Venturi tube 54 from path 44, thus mixes with the concentrate at Venturi tube 54 place, and described mixture continues through path 34 along path 48 upward to spray nozzle 42.Current along the second path be in the passageway 34.If shutoff valve 58 is opened, concentrate just moves up along path 50, and mixes with the water in path 34 at the second Venturi tube 52 place.This water/concentrated logistics runs into the first water/concentrate mixture at point 62 place, and mixture is flowed out together by nozzle 42.If shutoff valve 58 cuts out, so only water flow is by path 34, thus adds in water/concentrate mixture at point 62 place, and is flowed out by spray nozzle 42.Therefore, according to the volume of water necessary in mixture, if need more water, shutoff valve just cuts out, if need less water, shutoff valve just stays open.Shutoff valve 58 is controlled by metering device 28.
Referring to Fig. 7 and Fig. 8, it illustrates the Venturi tube 52 be in path 34.Concentrate moves outwardly and into venturi throat (throat) along path 50, puts it mix with the water in path 34 at this.The design of this Venturi tube has the best throat diameter of the scope for the flow rate that uses in this spraying sub-assembly 12 and mixed proportion.This Venturi tube allows to come mixing water and concentrate with higher energy efficiency, because both flowing in the same direction.
To spray nozzle and the size of Venturi tube and the adjustment of flow behavior for realize for the suitable atomization of lawn and garden application and spray pattern very crucial.The spray nozzle used in garden sprayer works designed in its typical operating pressure.In Venturi tube design, there is pressure loss in venturi throat downstream, cause is the frictional dissipation caused by the mixing of the stream of friction speed in the change of flow path geometry and throat.Spray nozzle designed to discharge coefficient between about 0.2 gallons per minute in the scope of about 0.4 gallons per minute, and with suitable pattern shape and distribute provide between about 200 microns to the droplet size in 600 micrometer ranges.Spray nozzle design also has the identical different spray patterns of discharge coefficient.This designs of nozzles provides correct fluid pressure to distribute and flow rate, thus can obtain correct mixed proportion within the scope of operating pressure and when different spray nozzles arranges.
In another aspect of this invention, referring to Fig. 9, it illustrates the details of shell 30.Shell 30 can be made by injected chemicals fluid being had repellence any suitable material compatible with it.Example is including (but not limited to) dissimilar polymeric material (such as, polyethylene and polypropylene) and metal (such as, stainless steel).In a preferred embodiment, shell 30 and other fluid components are made up of polypropylene that clarifying, and such user just can check chemicals fluid, to determine when fluid chemical field at chemicals fluid through during system.The section 66 be positioned on shell 30 is transparent or semitransparent, and such user just can check just through the fluid of system.As in Fig. 9 illustrate, shell 30 is all transparent, or only has particular section to be transparent.Shell 30 also can comprise flow indicator 68, and whether indication mechanism is run on request.
In another aspect of this invention, sprayer combination part 12 can comprise the self-cleaning cycle as the spraying option on metering device 28.As illustrated in Figure 10, " cleaning " circulation 70 is included on metering device 28.This self-cleaning option makes water rinse in sprayer combination part 12, thus removes all vestiges of chemicals in fluid conduit systems 29, axle 40 and spray nozzle 42.Particle accumulation and blocking in nozzle 42 and fluid conduit systems 29 can be prevented like this, and allow user can clean sprayer combination part 12, and without the need to removing spraying sub-assembly before washing.This eliminates further or reduces the possibility that user is exposed to chemicals.
As another option, easily can dismantle spraying sub-assembly 12 and clean.Sprayer 11 and metering device 28 are depicted as independent assembly by Figure 11, and described assembly is easy to take apart when carrying out cleaning further.
Although describe the present invention with reference to one exemplary embodiment, be understood by those skilled in the art that, without departing from the scope of the invention, various change can be made and available equivalents substitutes element of the present invention.In addition, when not departing from base region of the present invention, many amendments can be made and be adapted to teaching of the present invention to make concrete condition or material.Therefore, it is desirable to the invention is not restricted to as expecting the specific embodiment disclosed for performing optimal mode of the present invention, the present invention by comprise belong to appended embodiment scope in all embodiments.